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LOW3.1

GHSA-747v-52c4-8vj8

Contao: Unencoded insert tags in the frontend

Quick fix

GHSA-747v-52c4-8vj8 — contao/core-bundle: upgrade to the fixed version with the command below.

composer require contao/core-bundle:^4.13.40

Details

### Impact

It is possible to inject insert tags via the form generator if the submitted form data is output on the page in a specific way.

### Patches

Update to Contao 4.13.40 or 5.3.4.

### Workarounds

Do not output the submitted form data on the website.

### References

https://contao.org/en/security-advisories/insert-tag-injection-via-the-form-generator

### For more information

If you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose).

Are you affected?

Enter the version of the package you're using.

Affected packages

Packagist/contao/core-bundle
Introduced in: 4.0.0Fixed in: 4.13.40
Fixcomposer require contao/core-bundle:^4.13.40
Packagist/contao/core-bundle
Introduced in: 5.0.0-RC1Fixed in: 5.3.4
Fixcomposer require contao/core-bundle:^5.3.4

References